As a youngster, Jonny made a name for himself with roles in Little Giants, Grace Under Fire and Star Trek: The Next Generation, in which he played Alexander Rozhenko.

The former child star’s cause of death has not yet been confirmed.

Jonny quit acting at the age of 12 and went no to become a musician, going by the name of Jonny P. Jewels.

His career in music took off with glam punk rockers Kill City Thrillers, who later became Soda Pop Kids.

The band dissolved in 2009 and Jonny since went on to launch a vegan restaurant in Portland, Oregon.

The eatery, Harvest at The Bindery, has permanently closed down as a result of his death.

Harvest posted a statement on Facebook saying: “Due to unexpected tragedy, Harvest will be permanently closing our doors.

“We thank you for your support and understanding.”

They also shared details of a memorial service being held for Jon on Sunday, along with a link to a gofundme.com page to donate to help cover the costs of his funeral and memorial, adding: “Jon Paul Steuer R.I.P.”